Audi A8 1994 Service Manual page 86

Audi A8 1994 ➤
Electrical system Self-diagnosis 02.99 ➤ - Edition 05.2002
Display group
Down
- Terminate function "08 - Read measured value block" by touching ◂ key.
List of display groups:
Display group
number
022 1 = Start
2 = Engine control unit
3 = Key status
4 = Number of matched keys
023 1 = Variable code authorized
2 = Key status
3 = Fixed code authorized
4 = Immobilizer status
024 1 = Dash panel insert disabled
time
2 = Engine control unit disabled
time
3 = Emergency release disabled
time
4 = Transponder identification dis‐
abled
time
025 1 = CAN communication
Measured value block 022
Read measured value block 22
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Starting authorized
▪ 1 = Yes
▪ 0 = No, i.e. vehicle key not/incorrectly matched or engine control unit incorrectly coded/defective
1) Depending on engine control unit, measured value block is set for 10 ... 30 s after switching off engine
and ignition to "0 = Engine control unit response no", i.e. engine control unit released and no fault present. Start
self-diagnosis again as a check => Page
Measured value block 023
Read measured value block 23
1 1
82
01 - Self-diagnosis
VAS 5051
Press ▼ key
Indicated on display
1
Engine control unit response
▪ 1 = Yes (regardless of whether engine control unit authorized or not)
▪ 0 = No, i.e. engine control unit in run-on mode 1)
74 .
1
⇒
4
Key status OK
▪ 1 = Yes, i.e. possible to read formally correct
transponder fixed code (regardless of whether au‐
thorised or not)
▪ 0 = No, i.e. not possible to read formally correct
transponder fixed code
◂ Indicated on display
⇒
6
◂ Indicated on display
Number of matched keys
▪ Up to max. 8 keys